M 4.9 earthquake: North Pacific Ocean (Japan) — October 21, 1976

M 4.9 earthquake: North Pacific Ocean (Japan) — October 21, 1976. Epicenter 286 km SE of Yokohama, depth 33 km, 22:22 Local (1976-10-21 13:22 UTC). Readings from every reporting agency, affected towns, aftershock sequence.

North Pacific Ocean (286 km SE, Japan) — 33.109, 140.937

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